41 reviews
Size Chart
Jet Black

Knee warmers to winterise your baggies or lycra cycle shorts. Put them on in the cold. Peel 'em off and shove in your back pocket when your motor warms up.

  • Fast-drying, 4-way stretch Hot Shot™ Merino.
  • Gripper elastic at hem keeps them hitched up.
  • Hazard!™ reflective logos on each calf for night time visibility.
  • Designed & made by us in Aotearoa | New Zealand.

  Weight: 120 gm

4-way stretch winter luxury uniquely combines superfine NZ merino against your skin with a tightly woven, hardwearing nylon outer and lycra to stretch and move with your body. Warm as pie. Developed by Ground Effect and knitted just for us.
  • Composition: 38% merino; 46% nylon; 16% lycra.

Night travel is a spooky experience. Many Ground Effect garments feature our Hazard!™ reflective logo and piping to help remind traffic that we're on the road too.

+More than Kiwi Made
Ground Effect clothing is crafted right here in New Zealand. Has been ever since we started back in 1994. Manufacturing locally works for us. We operate a quick-response system - holding minimal stock of any one item, but churning out a few more quick-smart when the pile gets low. The upshot is that we are seldom caught with our shelves empty, so orders get despatched the same day you place them.


  • All Ground Effect clothing enjoys a warm 40ºC machine wash. Try to avoid cold-water detergents and those with bleach, 'oxygen whitener' or fabric softener.
    • The cold-water varieties have little enzymes that are super-charged to brave the cold but can damage technical fabrics and cause skin irritation. 
    • Bleach rots natural fibres like merino, strips the dye, attacks laminates of waterproof fabrics and can also cause skin irritation.
    • Sodium Percarbonate (the main ingredient in oxygen whitener) can make colours run.
    • Fabric softener and stuff containing it like wool wash destroys the water repellent finish on waterproof and water resistant fabrics, and can cause colours to run. 
  • As a rule of thumb, a product that is easy on the planet is also easy on your body. Select a mild plant-based soap like EcoverEcostoreEarthwise or Aware.
  • Hand washing is sometimes the only option on tour, but a washing machine rinses more thoroughly and is preferable if you have the choice.
  • Most Ground Effect gear dries super-fast so hanging on the line or drooping over the bedpost is generally the best option. High heat can damage some fabrics so if you do take your threads for a spin, set the device on 'medium' or 'warm' rather than hot. A lap in the dryer is recommended for your rain jacket, after it has dried on the line, as it helps recharge its water repellent finish. 

  • Wash colours separately.

Customer Reviews
5.0 Based on 41 reviews
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Filter Reviews:
    Mark F.
    New Zealand New Zealand
    Kneecaps Review

    This is my second pair and they are great, not only for keeping my knees warm on my bike but for keeping my legs warm when wearing a suit to work, which is standard work wear for me. And no-one knows :) Mark

    Robin F.
    New Zealand New Zealand
    Kneecaps review

    These Kneecaps are superb. Merino, they are light with the right amount of stretch and warmth, and they always stay up. Highly recommend them for walking on frosty mornings or biking in a chilly wind. The online purchase arrived the day after I ordered.

    Grant N.
    New Zealand New Zealand
    Knee Caps

    Not to hot, Not to cold. I found these best operating between 2 and 10 degrees. A bonus is that I got full coverage of my legs when I was wearing my zig zags on my feet coupled with my innuendos Bike pants. Also, they hold up really well

    Rob S.
    New Zealand New Zealand
    Knee Caps for Lucky Legs

    Yes we all know the Popsicle joke, I'm 180 cm and 78 kg. The medium size that Ernie suggested are spot on. They have not moved down while riding and keep my poor abused knees nice and warm.

    David S.
    New Zealand New Zealand
    Kneecaps Great!!

    Recently purchased kneecaps to keep my arthritic knees warm. Absolutely great. So, not just useful for cycling. Many thanks Ground Effect.

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